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Comparison of the Absorbed Dose of Target Organs between Conventional and Digital Panoramic Radiography

Authors: Zohre Reyhani, Nadia Nil Avar and Mohamad Ali Moghadam

Int J Med Res Health Sci.28-31 | pdf PDF Full Text

ABSTRACT
The purpose of this study was to measure and compare target organ’s exposure by direct digital and conventional
panoramic radiography. Dose measurements were carried out on a RANDO phantom, which TLDs were placed into
5 target area: thyroid gland, left and right submandibular and parotid salivary glands. Panoramic radiographs
were taken with two conventional (CRANEX Tome, Soredex, Tusula Finland) and direct digital devices (CRANEX
D, Soredex, Tusula Finland).In total, the phantom was irradiated 30 times in the two systems. The TLDs were then
coded and analyzed. T-test of statistical analysis was used to find the correlation. We found statistically significant
reduction in absorbed dose of target organs in digital panoramic radiography(P<0.01). The highest absorbed dose
was for submandibular gland and the lowest was for thyroid gland. We concluded that can reduce absorbed dose in
vital organs.
Keywords: Dosimetry, Conventional Panoramic, Digital Panoramic, Thyroid Gland

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